MODEL 330 OPERATOR'S MANUAL - Peterbilt Motors Company
MODEL 330 OPERATOR'S MANUAL - Peterbilt Motors Company MODEL 330 OPERATOR'S MANUAL - Peterbilt Motors Company
Air System Scheduled Maintenance Table 11 Air System Scheduled Maintenance Preventive Maintenance Use Table 11, ”Air System Scheduled Maintenance,” to schedule service operations and air system tests. MAXIMUM INTERVALS TEST EACH WEEK EACH MONTH (10,000 mi) (16,000 km) THREE MONTHS (25,000 mi) (40,000 km) SIX MONTHS (50,000 mi) (80,000 km) Air Compressor • Air Governor • System Leakage • Dual Air Brake Treadle Valve • – or – • Hand–Operated Trailer Brake Valve • – or – • Tractor Parking Valve • Parking Brake Valve • Trailer Air Supply • Tractor Protection Valves Relay Valve Spring Brake Inversion Valve Automatic Limiting Valve Single Check Valves Double Check Valves Stop Light Switch Low–Pressure Wig Wag Low–Pressure Switch Automatic Drain Valve Safety Valve Quick Release Valve Manual Drain Valve • • • • • • • • ANNUALLY (100,000 mi) (160,000 km) • • • • • – 164 – PB1318 3/01 Model 330
Preventive Maintenance Air System Function Test Scheduled maintenance should be performed on the Model 330 air system, as outlined in the Medium Duty Maintenance Manual and Table 11. In addition, perform an Air System Function Test at least every 3 months or if there is any indication of a potential problem. Air Tanks The front (secondary) service tank is underneath the cab, on the driver’s side; the wet (supply) tank is underneath the front service tank, behind the battery box; and the rear (primary) service tank is attached to the left frame, just behind the cab. The supply tank (or “wet” tank), must be drained on a daily basis. Drain the supply tank by pulling the drain valve lanyard. Hold it open until the escaping air is free of water. The two service tanks (or “dry” tanks), must be drained on a weekly basis. Drain the two service tanks by opening the drain valves. Turn valve handles counter-clockwise, and leave open until the escaping air is free of water. Air System WARNING! If the supply and service tanks are not drained at the recommended frequency, water could enter the air lines and valves. This could cause corrosion or blockage, which could compromise the brake system safety and potentially cause an injury accident. FRONT SECONDARY (SERVICE) TANK Location of Air Tanks DRAIN VALVE REAR PRIMARY (SERVICE) TANK WET (SUPPLY) TANK UNDER FRONT SERVICE TANK 02602 Periodically: Clean filter screens ahead of the valves by removing the screens and soaking them in solvent. Blow them dry with pressurized air before reinstalling them. Model 330 PB1318 3/01 – 165 –
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Preventive Maintenance<br />
Air System Function Test<br />
Scheduled maintenance should be performed on the Model<br />
<strong>330</strong> air system, as outlined in the Medium Duty Maintenance<br />
Manual and Table 11. In addition, perform an Air System<br />
Function Test at least every 3 months or if there is any<br />
indication of a potential problem.<br />
Air Tanks<br />
The front (secondary) service tank is underneath the cab, on<br />
the driver’s side; the wet (supply) tank is underneath the front<br />
service tank, behind the battery box; and the rear (primary)<br />
service tank is attached to the left frame, just behind the cab.<br />
The supply tank (or “wet” tank), must be drained on a daily<br />
basis. Drain the supply tank by pulling the drain valve lanyard.<br />
Hold it open until the escaping air is free of water.<br />
The two service tanks (or “dry” tanks), must be drained on a<br />
weekly basis. Drain the two service tanks by opening the<br />
drain valves. Turn valve handles counter-clockwise, and<br />
leave open until the escaping air is free of water.<br />
Air System<br />
WARNING! If the supply and service tanks are<br />
not drained at the recommended frequency,<br />
water could enter the air lines and valves. This<br />
could cause corrosion or blockage, which could<br />
compromise the brake system safety and potentially<br />
cause an injury accident.<br />
FRONT<br />
SECONDARY<br />
(SERVICE) TANK<br />
Location of Air Tanks<br />
DRAIN VALVE<br />
REAR PRIMARY<br />
(SERVICE) TANK<br />
WET (SUPPLY)<br />
TANK UNDER<br />
FRONT SERVICE<br />
TANK<br />
02602<br />
Periodically: Clean filter screens ahead of the valves by<br />
removing the screens and soaking them in solvent. Blow<br />
them dry with pressurized air before reinstalling them.<br />
Model <strong>330</strong> PB1318 3/01 – 165 –